Sliding door.



L. JANSE.

SLIDING DOOR.

APPLICATION FILED MAII.23. I915.

1,223,697., Patented Apr. 24, 1917.

I ll

II'HNESSE LEENDERT JANSE, OF THE HAGUE, NETHERLANDS.

SLIDING DOOR.

Specification of Letters Patent.

Patented Apr. 24:, 191?.

Application filed March 23, 1915. Serial no. 16,403.

To all whom it may concern:

Be it known that 1, LEENDERI. JANsn, a subject of the Queen of theNetherlands, and residing at 53 Kanaalweg, The Hague, the Netherlands,have invented a certain new and useful Sliding Door, of which thefollowing is a specification.

This invention relates to a new system of sliding door and has for itsobject to provide a door of simple construction which can readily andquickly be opened and closed.

The sliding door constructed in accord- .ance with this invention isespecially useful for railway wagons, but it may also be ap plied tosteamers, lift cages, buildings and the like, as will be readilyunderstood from the following detailed description.

On the accompanying drawing one form of a sliding door according to thisinvention as applied to a cattle wagon is illustrated.

Figure 1 is an elevation of the closed door mounted in the end of thewagon, the latter being shown in section on line l1 in Fig. 2.

Fig. 2 is a plan view of the same with the end of the wagon shown insection on line 22 in Fig. 1.

Fig. 3 is an elevation of the opened door with the end of the wagonshown in section on line 33 of Fig. 4.

Fig. 4: is a plan view of the same with the end of the wagon shown insection line 4-4: in Fig. 3.

Like letters indicate like parts throughout the drawing.

The door 1 is suspended from or supported by two hooks 2 and 3, whichare pivotally mounted respectively in brackets 4 and 5, rigidly attachedto the upper part of the door. At their upper extremities the hooks 2and 3 are provided with rollers 6 and 7 respectively; said rollersrunning on guide rails 8 and 9 arranged at a right angle to one another.In the fioor of the wagon two guides 10 and 11 are provided respectivelyarranged parallel to and in a vertical direction under the guide rails 8and 9. The guide pins 12 and 13 arranged in a vertical direction underthe hooks 2 and 3 respectively can slide in the guides 10 and 11.

The door 1 may be constructed of wood, steel or any other suitablematerial. In the closed position of the door (as shown in Figs. 1 and2), the roller 6 is situated on the guide rail 8 near the intersectingpoint of the guide rails 8 and 9 and the roller 7 on the guide rail 9 atsome distance from said intersecting point. The guide pins 12 and 13 arecorrespondingly situated in the guides 10 and 11 respectively.

In opening the door the roller 6 runs over the rail 8 and the roller 7over the rail 9; in a corresponding manner the guide pins 12 and 13slide in the guides 10 and 11 respectively. During this movement of thedoor the hooks 2 and 3 pivot in their brackets 4t and 5 and each part ofthe door describes an elliptic curve. In the fully opened position ofthe door (as shown in Figs. 3 and 4c) the roller 6 is situated on therail 8 near the end thereof opposite to the intersecting point of therails 8 and 9 and the roller 7 011 the rail 9 close to said intersectingpoint. The guide pins 12 and 13 again occupy corresponding positions inthe guides 10 and 11 respectively.

The doors according to this invention present considerable advantages onaccount of the little space occupied thereby and the readiness withwhich they may be opened and closed in loading and unloading wagons. Itis a particular-advantage of this sliding door that it can-readily'beprovided at the front and rear ends of wagons and cars, and when in theopen position it projects from the end of the wagon (as shown in Figs. 3and 4) thus acting as a guard for cattle or persons passing from onewagon to the next.

It will be understood that the sliding door as described and illustratedmay be modified in several ways in order to make it better suit theparticular uses for which it is destined without departing from thespirit of the invention. For instance, the door may consist of two partsmoving in opposite directions in opening the door. Further the top guiderails, and the-bottom guides, do not necessarily form a right angle witheach other. The upper part of the door may be guided by pins in suitableguides, the lower part then being provided with rollers running incorresponding rails.

Having now described my invention what I claim as new and desire tosecure by'Letters Patent is:

1. In a railway wagon the combination of a vertical door member, a sidehorizontal supporting track arranged substantially parallel to the'sidewall of the wagon, an

end horizontal supporting track arranged substantially parallel to theend wall of the wagon, a pair of spaced brackets attached to said doormember, means for engaging said side track only and pivotally mounted ona vertical aXis on one of said brackets, means for engaging said endtrack only and pivotally mounted on a vertical axis on the other bracketa pair of guide tracks and a' pair of guide members attached to saiddoor member and each engaging in one of said of a vertical door member,aside horizontal supporting rail arranged substantially parallel to theside wall of the wagon, an end horizontal supporting rail arrangedsubstantially parallel to the end wall of the wagon, a pair of spacedbrackets attached to said door member, a roller for engaging said side.rail only and pivotally connected to one of said brackets on a verticalaxis, a roller for engaging the end rail only and pivotally connected tothe other bracket on a vertical axis, a pair of guide tracks arranged invertical alinement with said supporting rails, and a pair of guidemembers attached to said door member and each engaging in one of saidguide tracks, said end'supporting rail being at a smaller disjtanceifromtheend wall of the wagon than it is -fro1nthe adjacent vertical edge ofthe door ,member When the latter is in its open Copies of this patentmay be obtained for position whereby the door member protrudes from theend of the Wagon when in said position.

3. In a railway Wagon the combination of a Vertical door member, a sidehorizontal supporting track arranged substantially parallel to the sidewall of the Wagon, an end horizontal supporting track arrangedsubstantially parallel to the end Wall of the wagon, a pair of spacedbrackets, attached to said door member, means for engaging said sidetrack only and pivotally mounted on a vertical axis on one of saidbrackets, means for engaging said end track only and pivotally mountedon a vertical aXis on the other bracket at a lesser distance from thedoor member than the aforesaid axis, a pair of guide tracks, and a pairof guide members attached to said door member and each engaging in oneof said guide tracks, said end supporting track being at a smallerdistance from the end wall of the Wagon than it is from the adjacentvertical edge of the door member when the latter is in its open positionwhereby the door member protrudes from the end of the wagon when in saidposition.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing Witnesses.

LEENDERT JANSE.

Witnesses:

H. F. Kooy, A. G. NELSON.

five cents each, by addressing the Commissioner of Patents,

Washington, I). G.

